there's no evidence to suggest there is. >> what about that, bob? >> well, i have -- i have a dozen letters on my desk from the major autostating exactly what you said. the use of e-15 in vehicles prfshd prior to 2012 could cause damage to the engines. 95% of the driving public doesn't know what e-15 is. i have a question to ask my friend bob. >> very quickly. >> i have the e-15 retailers' handbook the rfa put out and it says in here some underground tank systems and equipment may not be compatible with e-15, some equipment and service stations both new and used demonstrated limited ability to safely accommodate exposure to e-15 and may violate fire codes. my question is -- >> real quick. what's your response to that? >> it doesn't -- if it isn't safe in your tanks, why would it be safe in our tanks? >> some tanks are pretty darn old. there's no mandate to use it. it's a consumer choice. there's only a handful of gas stations offering it today. ethanol is cheaper than gasoline. e-15 would be a cheaper fuel for some consumers that want to use it. >>